dosbox: A x86 PC emulator for running old DOS games1

DOSBox uses SDL to emulate the PC hardware
required for running old DOS games. This
includes a 386 processor, an S3/Trio video card
with some tweaks to allow for older display
hardware like the Tandy, a Sound Blaster Pro,
the PC speaker, Tandy 3-sound, CMS/GameBlaster,
Disney Sound Source, and MIDI. DOS emulation is
integrated. It is possible to mount local
directories as drives inside the emulator.